Question

What would be the concentration of a solution made by adding 250 mL of water to 45.0

mL of 4.2 M KOH?

Answer 1

Step-by-step explanation:

The most common way to solve this problem is to use the formula

c

1

V

1

=

c

2

V

2

In your problem,

c

1

= 4.2 mol/L;

V

1

= 45.0 mL

c

2

= ?;

V

2

= 250 mL

c

2

=

c

1

×

V

1

V

2

= 4.2 mol/L ×

45.0

mL

250

mL

= 0.76 mol/L